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Deferred Policy Acquisition Costs	12 Months Ended
Deferred Policy Acquisition Costs	Dec. 31, 2016
Insurance [Abstract]
Deferred Policy Acquisition Costs	Deferred Policy Acquisition Costs Policy acquisition costs that are primarily and directly related to the successful production of new and renewal insurance contracts, most significantly agent commissions, premium taxes, and underwriting salaries and benefits, are capitalized as policy acquisition costs and amortized to expense, net of ceding commissions earned, as the related premium revenues are earned. Amortization of DPAC was $88.4 million, $79.6 million and $82.4 million for the years ended December 31, 2016, 2015 and 2014, respectively.